Stayed there a year ago. Pretty standard Marriott.
Nice rooms, very friednly/helpful staff. They had good advice on places for dinner and drinks.
Right on the water. Nice to have a coctail outside before heading out to dinner.
Plenty of taxis waiting at the hotel (taxis in Copenhagen are very Credit Card friendly).
I was a Silver at the time and did not eat at the hotel, so I can't answer upgrade or food questions.